RHEL 7 : RHV-H security update (redhat-virtualization-host) 4.3.18 (Important) (RHSA-2021:3477)

critical Nessus Plugin ID 165135

Synopsis

The remote Red Hat host is missing one or more security updates for RHV-H.

Description

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:3477 advisory.

- sssd: shell command injection in sssctl (CVE-2021-3621)

- kernel: use-after-free in route4_change() in net/sched/cls_route.c (CVE-2021-3715)

- kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)

- libX11: missing request length checks (CVE-2021-31535)

- kernel: race condition for removal of the HCI controller (CVE-2021-32399)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL RHV-H package based on the guidance in RHSA-2021:3477.

See Also

http://www.nessus.org/u?c6f409ac

https://access.redhat.com/security/updates/classification/#important

https://access.redhat.com/errata/RHSA-2021:3477

https://bugzilla.redhat.com/show_bug.cgi?id=1961822

https://bugzilla.redhat.com/show_bug.cgi?id=1970807

https://bugzilla.redhat.com/show_bug.cgi?id=1975142

https://bugzilla.redhat.com/show_bug.cgi?id=1980101

https://bugzilla.redhat.com/show_bug.cgi?id=1993988

Plugin Details

Severity: Critical

ID: 165135

File Name: redhat-RHSA-2021-3477.nasl

Version: 1.9

Type: local

Agent: unix

Published: 9/15/2022

Updated: 4/28/2024

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 8.1

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2021-3621

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

CVSS Score Source: CVE-2021-31535

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:redhat-virtualization-host, p-cpe:/a:redhat:enterprise_linux:redhat-virtualization-host-image-update

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/9/2021

Vulnerability Publication Date: 4/20/2021

Exploitable With

CANVAS (CANVAS)

Core Impact

Metasploit (Netfilter x_tables Heap OOB Write Privilege Escalation)

Reference Information

CVE: CVE-2021-22555, CVE-2021-31535, CVE-2021-32399, CVE-2021-3621, CVE-2021-3715

CWE: 362, 416, 77, 78, 787

RHSA: 2021:3477